Dunkirk DKVLT-050 - Page 9

9
FIGURE 3-4 Boiler Components 50/75/100 MBH (View from Front of Boiler) As seen on front cover
(18) GAS SHUTOFF
VALVE
VALVE
(SHOWN IN OPEN
POSITION)
(25) VENT CONNECTOR
(19) COMBUSTION
AIR
AIR
BLOWER
BLOWER
(20) GAS (CONTROL)
(20) GAS (CONTROL)
VALVE
VALVE
(22) LOW
(22) LOW
WATER CUTOF
WATER CUTOFF
(23) SAFETY RELIEF VALVE
(23) SAFETY RELIEF VALVE
(28) AIR VENT
(28) AIR VENT
(2) COMBUSTION
AIR INLET
NOTE:
See Section 5
For Piping
Instructions
(17) HEAT EXCHANGER
PUMP
PUMP
(10) CONDENSATE
COLLECTOR
(3) RETURN WATER
(3) RETURN WATER
FROM HEATING
FROM HEATING
SYSTEM (IN)
SYSTEM (IN)
(14) SUPPLY WATER TO
(14) SUPPLY WATER TO
HEATING SYSTEM (OUT)
HEATING SYSTEM (OUT)
(4) LOW VOLTAGE
TERMINAL STRIP
(15) VENT
TEMPERATURE
SENSOR
(26) GAS CONNECTION
(26) GAS CONNECTION
(33) COMBUSTION
ANALYSIS TEST
PORT
PORT
(24) HIGH VOLTAGE
JUNCTION BOX
JUNCTION BOX
(9) HEAT
EXCHANGER
(29) BOILER
CONTROL
MODULE
Fuse and
Holder
(5) IGNITER
(6) FLAME
SENSOR
(7) SIGHT GLASS
(32) FLUE
AIR MIXTURE
PRESSURE
TEST PORT
(16) CONDENSATE
(16) CONDENSATE
DRAIN
DRAIN
(
(
RE
(31) TRANSFORMER
(
(11) RETURN WATER
TEMPERATURE SENSOR
N
N
(13)
(13) INTERNAL PRIMARY
LOOP BALL VALVE
RY
PR
MA
R
Y
PRI
R
M
R
MA
PRIMARY
N
N
(35) HEAT EXCHANGER
SURFACE TEMPERATURE
SURFACE TEMPERATURE
SWITCH
SWITCH
3 - COMPONENT LISTING
(36) ASME
(36) ASME
PLATE
PLATE
(21) SUPPLY WATER
TEMPERATURE SENSOR
& HIGH LIMIT SWITCH